William c



W. C. BRINTON, JR.

IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED JULYIO, 1919.

1,431,927. Patented Oct. 17,1922.

f Q mm Patented Oct. 17, 192 2.

UNITED STATES PATENT OFFIC PENNSYLVANIA, A CORPOBA 'I'ION OF DELAWARE.

IGNITION SYSTEM FOR INTERNAL-COMBUSTION ENGINES.

Application filed July 10,1919. Serial Io. 309,943.

C. BRINTON,

United States, residing Chester, and

State of Pennsylvania, have invented a new and useful Improvement in I tems for Internal-Combustion which the followin gnition Sys- Engines, of

is a full, clear, and exact description, re erence being had to the accompanying drawings, WhlCh form a part of this specification.

The object of my invention is to provide new and improved means for supplying plugs in the secondary continuously an unvarying current to spark circuit of ignition systems for internal combustion engines, regardless of atmospheric conditions.

It has been found that the efiiciency of the secondary or high tension current in ignition systems is materially the presence of what I have h static electricity, which varies impaired by erein termed with the atmospheric conditions and acts at certain times to cause a spark plugs Heretofor e ity has been recognized and it served that, in addition to causi sluggish discharge at the resulting in a lagging spark.

the presence of static electrichas been obng the spark to lag, it breaks down the condenser, due to the fact that although the static has a very low amperage, it has at times voltage, greatly in a very high excess of the capacity of the condensers ordinarily used in ignition work, and at the same time tends to pit the points of the contact maker and interrupter due to arcing.

I have found that the static the high tension line between is greatest in the secondary coil and the distributor wherein the current tends to back up between contacts, although it is also present to a lesser bu gree in the spark plug leads.

Heretofore the spark some instance been tube suitably preventing ind uction from one other. The leads contact with intervals and no doubt a certai the static is removed.

t serious deplug leads have in carried loosely in a metal rounded forthe purpose of wire to anthe tube at n amountof This induction-preventing provision, however, 18 inefficient to neutralize the static, be-

cause the greatest efl'ect of the static is not felt in the spark plug leads, but behind the distributor, and because the le ads are carried loosely in the metal tubing and have contact with it only at relatively widely separated intervals. In addition, it has been found that moisture gets into the tube from condensation, causing the leads to short circuit.

In accordance with my invention, I provide means for positlvely drawing off or spark plug lead asembly involving a detail of my invention. P Fig. 3 is a cross-section along line 3'3 of *ig. 2.

Fig. 4 is a view, partly in section, of a spark plug lead assembly involving a modification of my invention.

Fig. 5. is a cross section along line 5-5 of Fig. 4.

Fig. 6 is a cross-section Fig. 1.

A battery a, suitably grounded at b, is connected to the. primary coil 0, which in turn is connected with a movable contact 03 adapted to be intermittently moved into and out of contact with a contact a by the cam f and spring in. Contact e is grounded at g, and a condenser 11. is connected between contacts (Z and e.

A secondary coil 11, surrounding the primary coil 0, is grounded at 7' and connected to a distributor lcby means of the cable I. The leads m connect the distributor with. spark plugs 10; on cylinders 0.

The leads m are positioned about and firmly bound to a metal rod p, the ends of which are bent to form feet and suitably fastened to a convenient part of the engine or other fixed part, to support and ground the bar. The leads are covered with a suitable covering r to protect them from moisture, oil, dust, etc

The leads m may be run through a metal tube 8, shown in Fi s. 4 and 5, in which they are adapted to t tightly, so as to insure their continuous contact with the tube along line 6-6 of throughout their length, the tube being fasdrained into the ground w, it entirely innocuous and tened to and grounded on the en ine. lit desired, some material which will arden may be run into the tube 8 to fill the interstices between the leads, keep them firmly contacted with the tube and exclude moisture. The metal plate u, which conforms to and tits tightly against the insulation t of cable Z, is held in tight contact with the cable by means of any suitable covering or wrapping 'u and is grounded at w. The plate a may, of course, be replaced by a metal tube or wire coil adapted to entirely surround the cable Z. p

lln operation, the static electricity present in the high tension cable Z passes through the insulation t because of its high voltage and into the plate a, from which it is thus rendering preventing the harmful results caused by it, as heretofore pointed out.

Any static electricity present in the spark plug leads is, likewise, drained to the ground from the rod p, or tubes 8, into which it passes from the leads, due to their constant contact with the bar throughout its length.

en Learns"? fully described my invention,

Having now protect by Letwhat I claim and desire to ters Patent is:

An ignition system for internal combustion engines, compri ing a primary circuit includin a primary coil and an interrupter, a secon ary circuit including a secondary coil in inductive relation to the primary coil, a distributor, an insulated wire leading from the secondary coil to the distributor, a spark plug for each cylinder of the engine, an insulated wire for each spark plug leading from the distributor, a grounded static current drain in operative relation with the wire leading from coil to the distributor, and a second grounded static current drain in operative relation with all the wires leading from the distributor to the spark plugs, whereby the static electricity in the wires on both sides of the distributor are grounded.

in testimony of which invention, hereunto set my hand, at Philada, Penna,

on this 27th day of June, 1919.

' WILLIAM c. BRINTON, JR.

the secondary l have 1 

